EP0433723B1 - Compositions de résines de polycarbonates aromatiques contenant de SAN ou de SAN et de ABS - Google Patents

Compositions de résines de polycarbonates aromatiques contenant de SAN ou de SAN et de ABS Download PDF

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Publication number
EP0433723B1
EP0433723B1 EP19900122791 EP90122791A EP0433723B1 EP 0433723 B1 EP0433723 B1 EP 0433723B1 EP 19900122791 EP19900122791 EP 19900122791 EP 90122791 A EP90122791 A EP 90122791A EP 0433723 B1 EP0433723 B1 EP 0433723B1
Authority
EP
European Patent Office
Prior art keywords
weight
compositions
san
acrylonitrile
styrene
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19900122791
Other languages
German (de)
English (en)
Other versions
EP0433723A1 (fr
Inventor
Tungfai Lo
Michel Erpelding
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Priority to EP93120066A priority Critical patent/EP0593097B1/fr
Publication of EP0433723A1 publication Critical patent/EP0433723A1/fr
Application granted granted Critical
Publication of EP0433723B1 publication Critical patent/EP0433723B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • C08L25/04—Homopolymers or copolymers of styrene
    • C08L25/08—Copolymers of styrene
    • C08L25/12—Copolymers of styrene with unsaturated nitriles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
    • C08L23/30—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by oxidation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
    • C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers

Definitions

  • the present invention relates to moulding compositions comprising an aromatic polycarbonate resin and a styrene/acrylonitrile (SAN) copolymer or a styrene/ acrylonitrile (SAN) and acrylonitrile/butadiene/styrene (ABS) resin copolymer and in particular such compositions having an improved multiaxial impact resistance and an improved impact resistance at low temperature.
  • SAN styrene/acrylonitrile
  • ABS acrylonitrile/butadiene/styrene
  • compositions of aromatic polycarbonate resins and SAN or SAN and ABS resins have a plurality of mechanical properties that render these compositions particularly suitable for the moulding of parts and specifically parts for the automotive industry.
  • US-A-4,554,302 describes an aromatic polycarbonate composition containing an N,N-dialkylamide, for example N,N-dimethylamide, as mold release agent.
  • EP-A-0,262,566 describes compositions of polycarbonate and, optionally, of other thermoplastics containing, as lubricant, oxidized polyethylenes having number average molecular weight ranging from 7,000 to 15,000.
  • EP-A-0,262,566 indicates that the specific lubricants used may increase the impact strength of the compositions when added in a quantity of 0.1% (Norm DIN 54 355). It also shows (comparative example 3) that oxidized polyethylenes having a number average molecular weight of 4,000 result at a concentration of 0.5% in a much stronger decrease of the impact strength of the polycarbonate compositions as compared to the higher molecular weight Lubricants.
  • the present invention provides a moulding compositions comprising:
  • composition may comprise one or more further lubricants chosen from pentaerithrityl stearate and alkylene bis stearamide.
  • compositions of the present invention may further include usual additives such as anti-oxidants, fillers, pigments, UV absorbers and flame retardants.
  • the suitable aromatic polycarbonate resins are polymers derived from a divalent phenol and a carbonate precursor, for example phosgen, haloformiate of a carbonate ester.
  • the aromatic polycarbonate resins have, preferably, a limiting viscosity number of about 0.35 to 0.75 (as measured in p-dioxane at 30°C and expressed in dl/g).
  • the divalent phenols suitable for preparing the aromatic polycarbonate resins are mononuclear and polynuclear aromatic compounds having two hydroxyl goups as functional groups which are both directly linked to a carbon atom of an aromatic ring.
  • resoncinol bis(4-hydroxy-5-nitro phenyl) methane
  • 2,2'-dihydroxy bisphenyl 2,6-dihydroxy naphtalene
  • bis(4-hydroxy phenyl) sulfone 5'-chloro-2,4'dihydroxy diphenyl
  • the aromatic polycarbonate resins using two or more divalent phenols or a copolymer of a divalent phenol with a glycol or a polyester having an acid end group or hydroxyl group.
  • the aromatic polycarbonate resin may also be prepared in the presence of a dibasic acid.
  • Crosslinked polycarbonate resins such as those described in US-A-4,001,184 may also be used. Mixtures of two or more of the above mentioned polycarbonate resins can also be used.
  • Preferred polycarbonate resin is the homopolymer derived from bisphenol-A and phosgene.
  • EP-A-0,248,308 describes compositions of polycarbonate resins, grafted polymerizate of styrene/acrylonitrile onto polybutadiene and of copolymerizate of styrene/acrylonitrile containing a trimethylpropane tristearate as lubricant.
  • the styrene units of the polymerizates of acrylonitrile and styrene grafted onto polybutadiene useful in the present invention are prefrably selected from styrene, alpha-alkylstyrenes, in particular alphamethylstyrene, and their mixtures. More specifically, the sum of the styrene monomers and acrylonitrile monomers introduced during the polybutadiene grafting ranges from 30 to 70% by weight with a ratio of styrene /acrylonitrile varying from 3/1 to 3/2, combined with 70 to 30% by weight of polybutadiene.
  • grafted copolymers comprising 50% by weight of acrylonitrile and styrene combined and 50% by weight of polybutadiene.
  • the grafting ratio of polybutadiene is generally between 30 and 95%, more specifically between 40 to 80%, more preferably between 40 and 65%.
  • styrene-acrylonitrile copolymers of the present invention and processes for making them are well known in the art and are described, among others, in NL-A-177.604.
  • styrene/acrylonitrile copolymers have generally a ratio of the styrene units to the acrylonitrile units of from 60/40 to 80/20 and a weight average molecular weight as determined by gel permeation chromatography of 70,000 to 150,000.
  • the styrene units of the styrene/acrylonitrile copolymers useful in the present invention are preferably selected from styrene, alpha-alkylstyrenes, in particular alpha-methylstyrene, and their mixtures.
  • the lubricants useful in the present invention are selected among the oxidized polyethylenes having a number average molecular weight of from 3,000 to 5,000, preferably 4,000.
  • the lubricant of the present invention which improves the multiaxial impact strength of the present compositions, are present, based on 100 parts by weight of (a) and (b), in an amount ranging from 0.1 to 2 parts by weight, preferably 0.2 to 0.5 parts by weight. Amounts lower than 0.1 parts by weight do not significantly improve the impact strength while amounts greater than 2 parts by weight although improving the impact strength of the compositions adversely affect other valuable properties of the present compositions.
  • the present compositions may also include certain usually known and used additives, such as inert and reinforcing fillers, for example glass, mica, clay and glass fibers ; UV absorbers, such as benzophenones ans benzotriazoles; flame retardants and anti-oxidants such as phenols, phosphites and their mixtures.
  • inert and reinforcing fillers for example glass, mica, clay and glass fibers
  • UV absorbers such as benzophenones ans benzotriazoles
  • flame retardants and anti-oxidants such as phenols, phosphites and their mixtures.
  • compositions A, B and C of Table 1 have been prepared by mixing the ingredients at 270°C in a twin-screw extruder and the compositions D to G and 1 to 5 of Table 1 have been prepared by mixing the mentioned ingredients at 250°C in a twin-screw extruder. The various compositions have been then moulded at 250°C into test pieces.
  • Melt viscosity has been measured at 260°C and 1000s-1 shear.
  • Multiaxial impact strength has been measured according to DIN 53443 and the Charpy impact strength according to DIN 53453.
  • compositions of the present invention (numeros 1 and 2) have a high multiaxial impact resistance, close to the multiaxial impact tesistance of compositions comprising only polycarbonate.
  • compositions of the present invention have notched Izod impact resistance and impact resistance according to DIN 53443 which remain exceptionally high even at low temparatures.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Claims (9)

  1. Composition pour moulage comprenant :
    (a) 10 à 75% en poids d'une résine de polycarbonate aromatique, et
    (b) 25 à 90% en poids d'un composant constitué de :
    (i) 5 à 100% en poids d'un copolymère de styrène et d'acrylonitrile, et
    (ii) 0 à 95% en poids d'un polymérisat résultant du greffage d'acrylonitrile et de styrène sur du polybutadiène, présentant un taux de greffage du polybutadiène compris dans l'intervalle allant de 30 à 95%,
       caractérisée en ce qu'elle comprend en outre, pour 100 parties en poids de (a) et (b):
    (c) 0,1 à 2 parties en poids d'un polyéthylène oxydé, ayant une masse moléculaire moyenne en nombre de 3000 à 5000, en tant que lubrifiant.
  2. Composition selon la revendication 1, comprenant 10 à 50% en poids de (a) et 50 à 90% en poids de (b).
  3. Composition selon la revendication 1 ou 2, caractérisée en ce que le composant (b) comprend 35 à 100% en poids de (i) et 0 à 65% en poids de (ii).
  4. Composition selon l'une quelconque des revendications précédentes, caractérisée en ce que le composant (c) représente 0,2 à 0,5 partie en poids.
  5. Composition selon l'une quelconque des revendications précédentes, dans laquelle le composant (a) est une résine de polycarbonate dérivée du bisphénol-A.
  6. Composition selon l'une quelconque des revendications précédentes, dans laquelle le composant (b) (ii) est un polymérisat obtenu par greffage d'acrylonitrile et de styrène sur du polybutadiène, contenant 50% de polybutadiène, 35% de styrène et 15% d'acrylonitrile.
  7. Composition selon l'une quelconque des revendications 1 à 6, caractérisée en ce que le lubrifiant est un polyéthylène oxydé, ayant une masse moléculaire moyenne en nombre de 4000.
  8. Composition selon l'une quelconque des revendications précédentes, comprenant en plus un ou plusieurs des additifs suivants : des charges inertes, des charges de renforcement, des agents absorbant les rayons UV, des agents retardateurs d'inflammation, des antioxydants.
  9. Composition selon l'une quelconque des revendications précédentes, comprenant en outre une charge.
EP19900122791 1989-12-20 1990-11-29 Compositions de résines de polycarbonates aromatiques contenant de SAN ou de SAN et de ABS Expired - Lifetime EP0433723B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP93120066A EP0593097B1 (fr) 1989-12-20 1990-11-29 Compositions de résines de polycarbonates aromatiques contenant du SAN ou du SAN et de l'ABS

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8916922A FR2659975B1 (fr) 1989-12-20 1989-12-20 Compositions de moulage a base de resine de polycarbonate et de copolymere de styrene/acrylonitrile et a base de resine de polycarbonate, copolymere de styrene/acrylonitrile et de resine d'acrylonitrile/butadiene/styrene.
FR8916922 1989-12-20

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP93120066.1 Division-Into 1990-11-29

Publications (2)

Publication Number Publication Date
EP0433723A1 EP0433723A1 (fr) 1991-06-26
EP0433723B1 true EP0433723B1 (fr) 1995-03-01

Family

ID=9388776

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19900122791 Expired - Lifetime EP0433723B1 (fr) 1989-12-20 1990-11-29 Compositions de résines de polycarbonates aromatiques contenant de SAN ou de SAN et de ABS
EP93120066A Expired - Lifetime EP0593097B1 (fr) 1989-12-20 1990-11-29 Compositions de résines de polycarbonates aromatiques contenant du SAN ou du SAN et de l'ABS

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP93120066A Expired - Lifetime EP0593097B1 (fr) 1989-12-20 1990-11-29 Compositions de résines de polycarbonates aromatiques contenant du SAN ou du SAN et de l'ABS

Country Status (4)

Country Link
EP (2) EP0433723B1 (fr)
DE (2) DE69031739T2 (fr)
ES (1) ES2070251T3 (fr)
FR (1) FR2659975B1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0628601A1 (fr) * 1993-06-03 1994-12-14 General Electric Company Mélanges de copolyméres ABS greffés et de polycarbonates à brillance réduite
JP3491767B2 (ja) * 1993-12-21 2004-01-26 日本ジーイープラスチックス株式会社 低光沢性ポリカーボネート／ａｂｓ樹脂組成物
KR20010075652A (ko) * 1998-10-23 2001-08-09 제이 엘. 차스킨, 버나드 스나이더, 아더엠. 킹 폴리카보네이트 수지/아크릴로니트릴-부타디엔-스티렌그래프트 공중합체/스티렌-아크릴로니트릴 블렌드
US6306962B1 (en) 1999-09-30 2001-10-23 The Dow Chemical Company Flow carbonate polymer blends
KR101134018B1 (ko) 2008-12-24 2012-04-05 제일모직주식회사 상용성이 향상된 난연 내스크래치 열가소성 수지 조성물 및이를 이용한 성형품
KR20170091128A (ko) * 2014-12-04 2017-08-08 코베스트로 도이칠란트 아게 폴리에틸렌 왁스를 함유하는 폴리카르보네이트 조성물
JP6682534B2 (ja) * 2014-12-04 2020-04-15 コベストロ、ドイチュラント、アクチエンゲゼルシャフトＣｏｖｅｓｔｒｏ Ｄｅｕｔｓｃｈｌａｎｄ Ａｇ 加工性が改良されたｐｅワックス含有コポリカーボネート組成物
AU2017100888B4 (en) 2016-06-30 2018-03-22 Ptt Global Chemical Public Company Limited Polycarbonate composition with improved mechanical properties
CN111690245B (zh) * 2020-07-17 2022-04-01 合肥科拜尔新材料股份有限公司 一种耐磨、耐湿热pc/abs材料及其制备方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2963152D1 (en) * 1978-07-03 1982-08-12 Mobay Chemical Corp Process for preparing a blowing agent concentrate
US4340683A (en) * 1979-08-27 1982-07-20 General Electric Company Polycarbonate compositions
US4554302A (en) * 1985-01-02 1985-11-19 General Electric Company Aromatic polycarbonate containing N,N-dialkyl amide mold release agent
DE3704666A1 (de) * 1986-10-03 1988-04-14 Bayer Ag Verwendung von oxydiertem polyethylen als entformungsmittel
DE3815124A1 (de) * 1988-05-04 1989-11-16 Bayer Ag Verwendung von siliconharzen als flammschutzmittel
NL8801865A (nl) * 1988-07-25 1990-02-16 Gen Electric Polymeermengsel met aromatisch polycarbonaat en vormlosmiddel.

Also Published As

Publication number Publication date
DE69017394D1 (de) 1995-04-06
EP0433723A1 (fr) 1991-06-26
ES2070251T3 (es) 1995-06-01
DE69017394T2 (de) 1995-10-12
FR2659975B1 (fr) 1993-04-30
FR2659975A1 (fr) 1991-09-27
DE69031739D1 (de) 1998-01-02
EP0593097B1 (fr) 1997-11-19
DE69031739T2 (de) 1998-06-25
EP0593097A1 (fr) 1994-04-20

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